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So, I have been experimenting with how to lay down the most optimal amount of foam. Because I am using a positive molding process (positive: material goes over a surface; negative: material goes into a mold), I have to contend with the material I lay down expanding in the wrong direction. The spray foam (e.g. Great Stuff) slowly and inexorably puffs in the direction of least resistence-- the air. When it sets it looks like a burn victim/bubble bath gone wrong. So,
I started experimenting with corralling. The downside: it uses ALOT of duct tape. The upside: it does work.
I have to take a one week break from this project. When I resume, I will try experimenting with tin foil (it's not just for hats anymore) plus some duct tape. If it goes very well, I may write a long piece of sculpting with Great Stuff foam and post it to "
So Very Helpful."
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